Transfer device applied to pulp molded manipulator, and production line

Abstract

A transfer device includes a wet blank transfer mold internally provided with an airtight air chamber, a front face with a recessed matching cavity configured to be sheathed on the outside of a pulp wet blank container and is recessed towards the airtight air chamber. The recessed matching cavity includes several small communicating holes provided respectively in an inner wall of each recessed matching cavity and at the bottom of the recessed matching cavity for communication between the recessed matching cavity and the airtight air chamber. A moving frame parallel to the wet blank transfer mold with evenly spaced vacuum cups, is connected to a back face of the wet blank transfer mold via a guiding mechanism. A driver connected between the back face of the wet blank transfer mold and the moving frame to drive the moving frame to move relative to the wet blank transfer mold.

What is claimed is: 
     
       1. A transfer device for use with a pulp molding manipulator, comprising: a wet blank transfer mold having.an internal airtight air chamber defined therein, a front face defining at least one recessed matching cavity that is recessed towards the airtight air chamber, has a cavity shape that matches the pulp wet blank container, and is configured to be sheathed on an outside surface of a pulp wet blank container, a plurality of small communicating holes defined in an inner wall and at a bottom of each recessed matching cavity that extend, and provide a plurality of air communication pathways, between each recessed matching cavity and the airtight air chamber; a guiding mechanism coupled to a back face of the wet blank transfer mold wherein the guiding mechanism comprises a plurality of parallel guide posts each affixed at a first end to the back face of the wet blank transfer mold, and each slidably sheathed within a separate guide sleeve affixed within a guide sleeve fixing hole defined in the moving frame, such that the moving frame is slidably movable on the guide posts and with respect to the wet blanket transfer mold; a moving frame movably coupled to the guiding mechanism and disposed parallel to the back face of the wet blank transfer mold; a driver disposed between, and operatively coupled to, each of the back face of the wet blank transfer mold and the moving frame, and configured to drive movement of the moving frame, as guided by the guiding mechanism, relative to the wet blank transfer mold; a plurality of evenly spaced vacuum cups disposed on the moving frame that are each directed away from the back face of the wet blank transfer mold; and a vacuum-pumping system operatively coupled to each of the airtight air chamber and the vacuum cups, and configured to draw a vacuum in the airtight chamber and suction at each recessed matching cavity via the communicating holes disposed therebetween, and draw suction at each of the vacuum cups. 
     
     
       2. The transfer device of  claim 1 , wherein a center of the bottom of each recessed matching cavity has a plurality of small central holes defined therein extending between the recessed matching cavity and the airtight air chamber that are configured to permit air communication between each recessed matching cavity and the airtight air chamber. 
     
     
       3. The transfer device of  claim 1 , wherein the wet blank transfer mold comprises:
 a main mold plate having a cavity defined in a back face thereof, wherein the cavity in the back face has an opening for communicating with the outside, and a plurality of recessed matching cavities distributed in an array are provided on the front face of the main mold plate; 
 the plurality of small communicating holes for communication between the recessed matching cavity and the airtight air chamber are respectively defined in the inner wall of each recessed matching cavity and at the bottom of the recessed matching cavity, the inner bottom part of the cavity in the back face of the main mold plate is provided with inner convex parts corresponding to the recessed matching cavities one by one, wherein the plurality of small communicating holes penetrate through the inner convex parts; and 
 a closing mold plate coupled to the back face of the main mold plate that closes the opening of the cavity defined in the back face of the main mold plate, and forms the airtight air chamber between the main mold plate and the closing mold plate. 
 
     
     
       4. The transfer device of  claim 3 , wherein the bottom of the chamber is provided with a reinforcing supporting structure contacting with a surface of the closing mold plate near to the chamber. 
     
     
       5. The transfer device of  claim 4 , wherein the reinforcing supporting structure comprises;
 several first reinforcing supporting bulges with uniform transverse spacing; and 
 several second reinforcing supporting bulges with uniform longitudinal spacing, wherein,
 the first reinforcing supporting bulges are disposed along a first straight line at a transverse center of the chamber, the second reinforcing supporting bulges are disposed along a second straight line at a longitudinal center of the chamber, and the first reinforcing supporting bulges and the second reinforcing supporting bulges are arranged in a cross shape, and 
 a first one end of each of the first reinforcing supporting bulges and the second reinforcing supporting bulges, located distal to the bottom of the chamber, each abut against a surface of the closing mold plate near the chamber. 
 
 
     
     
       6. The transfer device of  claim 5 , wherein a first supporting plane is provided at distal end of each first reinforcing supporting bulge abutting against the closing mold plate, and a second supporting plane is provided at the distal end of each second reinforcing supporting bulge abutting against the closing mold plate, and the first supporting plane and the second supporting plane are located in the same horizontal plane. 
     
     
       7. The transfer device of  claim 5 , wherein the inner wall of the chamber is provided with several arc-shaped concave surfaces which are connected in sequence, and the outermost inner convex part of the inner convex parts corresponds to the arc-shaped concave surface one by one.